200121221101321 has 8 divisors (see below), whose sum is σ = 215515360668104. Its totient is φ = 184727110032000.

The previous prime is 200121221101301. The next prime is 200121221101327. The reversal of 200121221101321 is 123101122121002.

It can be written as a sum of positive squares in 4 ways, for example, as 16542026361721 + 183579194739600 = 4067189^2 + 13549140^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200121221101321 - 2⁵ = 200121221101289 is a prime.

It is a super-2 number, since 2×200121221101321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200121221101327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8774821 + ... + 21845821.

It is an arithmetic number, because the mean of its divisors is an integer number (26939420083513).

Almost surely, 2^{200121221101321} is an apocalyptic number.

It is an amenable number.

200121221101321 is a deficient number, since it is larger than the sum of its proper divisors (15394139566783).

200121221101321 is a wasteful number, since it uses less digits than its factorization.

200121221101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14248731.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 200121221101321 its reverse (123101122121002), we get a palindrome (323222343222323).

The spelling of 200121221101321 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, three hundred twenty-one".